fix: gate transcript sanitization by provider

src/agents/pi-embedded-runner.sanitize-session-history.test.ts

@@ -40,17 +40,16 @@ describe("sanitizeSessionHistory", () => {
 
     await sanitizeSessionHistory({
       messages: mockMessages,
-      modelApi: "google-gemini",
+      modelApi: "google-generative-ai",
       provider: "google-vertex",
       sessionManager: mockSessionManager,
       sessionId: "test-session",
     });
 
-    expect(helpers.isGoogleModelApi).toHaveBeenCalledWith("google-gemini");
     expect(helpers.sanitizeSessionMessagesImages).toHaveBeenCalledWith(
       mockMessages,
       "session:history",
-      expect.objectContaining({ sanitizeToolCallIds: true }),
+      expect.objectContaining({ sanitizeMode: "full", sanitizeToolCallIds: true }),
     );
   });
 
@@ -69,7 +68,11 @@ describe("sanitizeSessionHistory", () => {
     expect(helpers.sanitizeSessionMessagesImages).toHaveBeenCalledWith(
       mockMessages,
       "session:history",
-      expect.objectContaining({ sanitizeToolCallIds: true, toolCallIdMode: "strict9" }),
+      expect.objectContaining({
+        sanitizeMode: "full",
+        sanitizeToolCallIds: true,
+        toolCallIdMode: "strict9",
+      }),
     );
   });
 
@@ -84,11 +87,10 @@ describe("sanitizeSessionHistory", () => {
       sessionId: "test-session",
     });
 
-    expect(helpers.isGoogleModelApi).toHaveBeenCalledWith("anthropic-messages");
     expect(helpers.sanitizeSessionMessagesImages).toHaveBeenCalledWith(
       mockMessages,
       "session:history",
-      expect.objectContaining({ sanitizeToolCallIds: false }),
+      expect.objectContaining({ sanitizeMode: "full", sanitizeToolCallIds: false }),
     );
   });
 
@@ -103,11 +105,10 @@ describe("sanitizeSessionHistory", () => {
       sessionId: "test-session",
     });
 
-    expect(helpers.isGoogleModelApi).toHaveBeenCalledWith("openai-responses");
     expect(helpers.sanitizeSessionMessagesImages).toHaveBeenCalledWith(
       mockMessages,
       "session:history",
-      expect.objectContaining({ sanitizeToolCallIds: false }),
+      expect.objectContaining({ sanitizeMode: "images-only", sanitizeToolCallIds: false }),
     );
   });
 
@@ -137,8 +138,27 @@ describe("sanitizeSessionHistory", () => {
       sessionId: "test-session",
     });
 
-    expect(helpers.isGoogleModelApi).toHaveBeenCalledWith("openai-responses");
     expect(result).toHaveLength(2);
     expect(result[1]?.role).toBe("assistant");
   });
+
+  it("does not synthesize tool results for openai-responses", async () => {
+    const messages: AgentMessage[] = [
+      {
+        role: "assistant",
+        content: [{ type: "toolCall", id: "call_1", name: "read", arguments: {} }],
+      },
+    ];
+
+    const result = await sanitizeSessionHistory({
+      messages,
+      modelApi: "openai-responses",
+      provider: "openai",
+      sessionManager: mockSessionManager,
+      sessionId: "test-session",
+    });
+
+    expect(result).toHaveLength(1);
+    expect(result[0]?.role).toBe("assistant");
+  });
 });